When debugging microcontroller programs, serial printing is a common method. Sometimes, when the hardware does not reserve a serial port, other methods are needed for printing and debugging.1. Jlink SEGGER RTTJlink SEGGER RTT is a very useful method that allows you to achieve printf-like functionality simply by using the SWD or JTAG interface of Jlink, … Read more
When debugging microcontroller programs, serial port printing is a very common method. Sometimes, when the hardware does not reserve a serial port, other methods need to be used for printing and debugging. 1. Jlink SEGGER RTT Jlink SEGGER RTT is a very useful method that only requires the Jlink’s SWD or JTAG interface to achieve … Read more
Introduction to J-Link J-Link is a JTAG emulator launched by SEGGER to support emulation of ARM core chips. Simply put, it is a JTAG protocol converter. It connects to the computer via USB, while still using the JTAG protocol to connect to the target board, completing the conversion from software to hardware. It supports emulation … Read more
Requirement Imagine you are facing a scenario where the MCU code has the following snippet, and you need to see the values of the variables in real-time sin_o cos_o automatically plotted, which is essentially a virtual oscilloscope (what a clever name)! #include <math.h> float x = 0; double sin_o = 0; double cos_o = 0; … Read more